I have dreamed of owning a jetpack since I was a kid and now it looks as if my dream might come true. New Zealand-based Martin Aircraft Company plans to produce 800 recreational-use jetpacks per year. On just 5 gallons of gas you get 30 minutes of air time. At a top speed of 55 knots (63 miles per hour) it will get you where you want to go pronto but if you plan to buy one you'd better start saving now because one of these nifty flying machines will set you back $100,000.